prepare-yum-repositories
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prepare-yum-repositories
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	#!/bin/bash

	# This script is used to prepare yum repositories, that are given as arguments.

	set -e

	# DEFAULT_REPOS and SKIP_REPOS_{ENABLE,DISABLE} are intentionally undocumented,
	# but might be used if we need to change this behaviour.
	# Once we realize there are real use cases for using those variables, we should
	# document them properly.
	DEFAULT_REPOS=${DEFAULT_REPOS:-"rhel-7-server-rpms rhel-7-server-optional-rpms"}
	SKIP_REPOS_ENABLE=${SKIP_REPOS_ENABLE:-false}
	SKIP_REPOS_DISABLE=${SKIP_REPOS_DISABLE:-false}

	function is_subscribed() {
	for f in /run/secrets/etc-pki-entitlement/*.pem ; do
	[ -e "$f" ] && return 0
	break
	done
	return 1
	}

	# repo files might be mounted in (read-only), better not try any write ops
	ls -1 /etc/yum.repos.d/ \| grep -v redhat.repo >/dev/null && SKIP_REPOS_ENABLE=true

	# install yum-utils for yum-config-manager
	yum install -y yum-utils

	if [ "$SKIP_REPOS_DISABLE" = false ] && is_subscribed; then
	# Disable only repos that might come from subscribed host, because there
	# might be other repos provided by user or build system
	echo "Running: yum-config-manager --disable rhel-\*"
	yum-config-manager --disable rhel-\* &> /dev/null \|\| :
	fi

	if [ ${SKIP_REPOS_ENABLE} = false ] && [ -n "${DEFAULT_REPOS}" -o $# -gt 0 ] ; then
	echo "Running: yum-config-manager --enable ${DEFAULT_REPOS} $@"
	yum-config-manager --enable ${DEFAULT_REPOS} "$@"
	fi